• 디지털융복합연구
• /
• 제17권12호
• /
• pp.91-108
• /
• 2019

게임은 세계인의 보편적인 여가문화로 자리 잡게 되었다. 그러나 게임 산업 발전에 따른 여러 긍정적인 영향과 함께 청소년들에게 악영향을 미치거나, 범죄 행위를 조장하는 등의 다양한 사회적 문제 또한 초래하고 있다. 이러한 영향을 최소화하기 위해서 세계 각 국가에서는 아동·청소년부터 일반 대중에게까지 연령과 사회적 가치에 적절한 게임물을 제공할 수 있도록 게임물 등급분류제도를 운용하고 있다. 게임이라는 새로운 디지털 콘텐츠에 대한 제도인 만큼 아직 등급분류 제도의 한계점은 여전히 많은 연구들에서 논의되고 있다. 이에 본 연구에서는 국내를 포함하여 다양한 국가의 게임등급분류제도를 조사하여 글로벌 게임규제 현황을 고찰한다. 또한 우리나라의 게임물 등급분류제도와 다른 국가의 등급분류제도를 비교분석하여 우리의 제도가 보다 적절하게 개선될 수 있는 방향을 제시한다. 본 연구 결과는 국내 게임물 등급분류제도의 실효성 확보와 표준화에 기여할 것이다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제14권12호
• /
• pp.4625-4647
• /
• 2020

The Generative Adversarial Networks, as one of the most creative deep learning models in recent years, has achieved great success in computer vision and natural language processing. It uses the game theory to generate the best sample in generator and discriminator. Recently, many deep learning models have been applied to the security field. Along with the idea of "generative" and "adversarial", researchers are trying to apply Generative Adversarial Networks to the security field. This paper presents the development of Generative Adversarial Networks. We review traditional generation models and typical Generative Adversarial Networks models, analyze the application of their models in natural language processing and computer vision. To emphasize that Generative Adversarial Networks models are feasible to be used in security, we separately review the contributions that their defenses in information security, cyber security and artificial intelligence security. Finally, drawing on the reviewed literature, we provide a broader outlook of this research direction.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제14권10호
• /
• pp.4157-4175
• /
• 2020

Moving target defense, as a 'game-changing' security technique for network warfare, realizes proactive defense by increasing network dynamics, uncertainty and redundancy. How to select the best countermeasure from the candidate countermeasures to maximize defense payoff becomes one of the core issues. In order to improve the dynamic analysis for existing decision-making, a novel approach of selecting the optimal countermeasure using game theory is proposed. Based on the signal game theory, a multi-stage adversary model for dynamic defense is established. Afterwards, the payoffs of candidate attack-defense strategies are quantified from the viewpoint of attack surface transfer. Then the perfect Bayesian equilibrium is calculated. The inference of attacker type is presented through signal reception and recognition. Finally the countermeasure for selecting optimal defense strategy is designed on the tradeoff between defense cost and benefit for dynamic network. A case study of attack-defense confrontation in small-scale LAN shows that the proposed approach is correct and efficient.

• 한국컴퓨터정보학회논문지
• /
• 제23권4호
• /
• pp.41-49
• /
• 2018

The purpose of this study is to investigate the effect of computer pointing game on the visual perception ability of children with severe intellectual disability. Based on a literature review, we developed a computer pointing game to improve visual perception ability, which consisted of three stages; catching a hamburger, catching a hamburger and a soda, and catching various foods. At each stage, different instructional models were applied by difficulty level of the contents. Experiments were performed among four children with severe intellectual disabilities for three weeks. They belonged to H public school in Kyeonggi, Korea. Their visual perceptions were quantitatively measured four times by utilizing the Korean Developmental Test of Visual Perception tool (K-DTVP-2). For qualitative evaluation, an observation assessment diary was written and analyzed. All four children at the fourth test showed better visual perception ability, compared with the ability at the first test. As a result of the analysis of the observation assessment, they were considered successful in their learning and ordinary life related to visual perception. It can be concluded that the computer pointing game may play a role in helping children with severe intellectual disabilities improve their visual perception ability.

• 정보교육학회논문지
• /
• 제23권6호
• /
• pp.513-520
• /
• 2019

일반적인 학습방법은 다수의 학습자를 대상으로 정해진 학습에 대한 내용을 전달함으로서 지식을 전달하는 것을 목적으로 하고 있다. 하지만 이와 같은 방식은 학습자의 흥미를 유발하기 어려우며, 일방적으로 전달하는 방식은 특히 학습자의 집중을 낮추어 전체적인 학업성취도를 낮출 수 있다는 단점을 가지고 있다. 이러한 문제를 보완하기 위해 학습자 스스로 학업에 대한 흥미를 유도하는 게이미피케이션 방법이 연구되고 있으며, 교육과 게임을 접목한 게이미피케이션은 학생의 흥미를 유도하여 학습에 영향을 줄 수 있다. 본 논문에서는 최근 제 4차 산업혁명에 의해 크게 화제가 되고 있는 블록체인의 위·변조 방지 원리를 카드게임으로 제작하고, 학생이 카드게임을 진행하며 기술의 원리를 이해할 수 있는 방안을 제시함으로서 정보과학 교육과정의 발전에 이바지 할 수 있는 방안을 제안한다.

• International Journal of Computer Science & Network Security
• /
• 제23권10호
• /
• pp.37-43
• /
• 2023

The hospital situation, timing, and patient restrictions have become obstacles to an optimum therapy session. The crowdedness of the hospital might lead to a tight schedule and a shorter period of therapy. This condition might strike a post-stroke patient in a dilemma where they need regular treatment to recover their nervous system. In this work, we propose an in-house and uncomplex serious game system that can be used for physical therapy. The Kinect camera is used to capture the depth image stream of a human skeleton. Afterwards, the user might use their hand gesture to control the game. Voice recognition is deployed to ease them with play. Users must complete the given challenge to obtain a more significant outcome from this therapy system. Subjects will use their upper limb and hands to capture the 3D objects with different speeds and positions. The more substantial challenge, speed, and location will be increased and random. Each delegated entity will raise the scores. Afterwards, the scores will be further evaluated to correlate with therapy progress. Users are delighted with the system and eager to use it as their daily exercise. The experimental studies show a comparison between score and difficulty that represent characteristics of user and game. Users tend to quickly adapt to easy and medium levels, while high level requires better focus and proper synchronization between hand and eye to capture the 3D objects. The statistical analysis with a confidence rate(α:0.05) of the usability test shows that the proposed gaming is accessible, even without specialized training. It is not only for therapy but also for fitness because it can be used for body exercise. The result of the experiment is very satisfying. Most users enjoy and familiarize themselves quickly. The evaluation study demonstrates user satisfaction and perception during testing. Future work of the proposed serious game might involve haptic devices to stimulate their physical sensation.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제13권4호
• /
• pp.1904-1921
• /
• 2019

In this paper, we investigate the problem of secure communications in multiple-input-multiple-output interference networks from the perspective of physical layer security. Specifically, the legitimate transmitter-receiver pairs are divided into different categories of active and inactive. To enhance the security performances of active pairs, inactive pairs serve as cooperative jammers and broadcast artificial noises to interfere with the eavesdropper. Besides, active pairs improve their own security by using joint transceivers. The encoding of active pairs and inactive pairs are designed by maximizing the difference of mean-squared errors between active pairs and the eavesdropper. In detail, the transmit precoder matrices of active pairs and inactive pairs are solved according to game theory and linear programming respectively. Experimental results show that the proposed algorithm has fast convergence speed, and the security performances in different scenarios are effectively improved.

• 한국정보처리학회:학술대회논문집
• /
• 한국정보처리학회 2023년도 추계학술발표대회
• /
• pp.1016-1017
• /
• 2023

이 연구는 ADHD 환자를 대상으로 디지털 치료 게임을 개발하였으며, 환자의 주의력과 기억력을 향상시키도록 구성되었다. 게임은 눈 움직임과 ADHD 의 연관성을 고려하여 아이트래킹 기술을 활용하여 개발되었다. 이를 통해 ADHD 환자를 위한 맞춤형 디지털 치료 게임의 중요성을 강조한다.

• 한국컴퓨터정보학회:학술대회논문집
• /
• 한국컴퓨터정보학회 2016년도 제53차 동계학술대회논문집 24권1호
• /
• pp.305-306
• /
• 2016

현재 스마트 시대에 살고 있는 우리는 매우 복잡하고 거미줄처럼 연결되어 있는 빅 데이터 환경에서 살고 있다. 이런 환경에서는 대용량 데이터를 효율적으로 관리하고 활용하는 것이 개인이나 기업들이 추구하려는 목표이다. 빅 데이터 시대에 데이터의 효율적인 관리와 활용을 위해 다양한 장비에서 수집되고 저장된 대용량 데이터에 대해서 일반적인 데이터 분석을 통한 보안 기술로는 상당한 시간과 자원 낭비가 수반된다. 이를 개선하기 위해 본 논문에서는 하둡을 이용하여 대용량 데이터에 대한 처리 및 분석을 통해 효과적인 보안 시스템을 제안한다.

• 한국정보처리학회:학술대회논문집
• /
• 한국정보처리학회 2023년도 춘계학술발표대회
• /
• pp.192-193
• /
• 2023

게임 산업의 성장에 맞춰 그에 따른 게임시스템 보안, 무결성 보장의 중요성 또한 커지고 있다. 본 논문에서는 게임 시스템과 TrustZone을 결합시켜 TrustZone의 Normal World와 Secure World 영역과 그 기능을 활용하여 게임 내 주요 데이터의 위·변조를 방지하여 시스템의 무결성을 보다 높은 수준에서 보장하는 방식을 탐구해보고자 한다.